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From "Amit Jain (JIRA)" <j...@apache.org>
Subject [jira] [Created] (OAK-2944) Support merge iterator for union order by queries
Date Tue, 02 Jun 2015 06:16:17 GMT
Amit Jain created OAK-2944:
------------------------------

             Summary: Support merge iterator for union order by queries
                 Key: OAK-2944
                 URL: https://issues.apache.org/jira/browse/OAK-2944
             Project: Jackrabbit Oak
          Issue Type: Sub-task
          Components: query
            Reporter: Amit Jain
            Assignee: Amit Jain


Currently, any order by union queries (including optimized OR XPATH) scan a much larger set
when returning the results even when the individual queries are sorted by the index itself.

We should have a merge iterator which would scan a much smaller set as the individual queries
would be sorted.



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